Gce Model Questions Vol1 2017 Biology Question 35
Practice objective / multiple choice question 35 from the 2017 Gce Model Questions Vol1 Biology examination.
The reflex arc for a quick withdrawal response consists of a sensory neuron that is \(0.80\) m long and a motor neuron that is \(0.60\) m long. The conduction velocity in the sensory fibre is \(50\) m s\(^{-1}\) and in the motor fibre is \(40\) m s\(^{-1}\). At the spinal interneuron there is a synaptic delay of \(0.5\) ms, and the subsequent muscle contraction requires \(20\) ms. Calculate the total elapsed time from the moment the peripheral receptor is stimulated until the muscle begins to contract.
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About This Question
This is Gce Model Questions Vol1 2017 Biology Question 35. It is one of the objective questions from the 2017 Gce Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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